I'm 75 y/o BTW. Been biking for 35 years.
I think I'll stick with biking.
I don't know, with knitting an occasional needle up the nose is the worst that will happen.
By the way, I have done more 100 mile rides than I can count but I do remember the 120 mile ride of the south circle in Yellowstone Park. Very calming except for a few brutal climbs over the Continental Divide. Fortunately I haven’t had a rib stuck in my lung yet.
Good for you. It’s great exercise.